BIOCHEM MODULE 6 EXAM
2026/2027 ACTUAL QUESTIONS
WITH VERIFIED ANSWERS.
In one sentence, identify the most noticeable difference between
between the A-form and Z-form of DNA. - correct answer -The Z-
form of DNA is left-handed, while the A-form of DNA is right-
handed.
In nucleic acid chemistry, compounds that contain an organic
nitrogen-containing base, sugar, and phosphate group are called
_(A)_. - correct answer -(A) nucleotides
Two purines found in DNA are _(B)_ . - correct answer -(B)
adenine and guanine
A pyrimidine found in all RNA, but not in DNA is _(C)_. - correct
answer -(C) uracil
, In DNA, the pair _(D)_ is held together by 3 hydrogen bonds. -
correct answer -(D) cytosine and guanine
In DNA, the pentose _(E)_ serves as the monosaccharide. -
correct answer -(E) 2-deoxyribose
The monomers of RNA nucleic aids, called nucleotides, consist of
3 parts. What are those 3 parts? - correct answer -A base, ribose,
and phosphoric acid.
Identify the following structure. - correct answer -guanine (purine)
Identify the following structure. - correct answer -adenine (purine)
Identify the following structure. - correct answer -thymine
(pyrimidine)
Identify the following structure. - correct answer -cytosine
(pyrimidine)
2026/2027 ACTUAL QUESTIONS
WITH VERIFIED ANSWERS.
In one sentence, identify the most noticeable difference between
between the A-form and Z-form of DNA. - correct answer -The Z-
form of DNA is left-handed, while the A-form of DNA is right-
handed.
In nucleic acid chemistry, compounds that contain an organic
nitrogen-containing base, sugar, and phosphate group are called
_(A)_. - correct answer -(A) nucleotides
Two purines found in DNA are _(B)_ . - correct answer -(B)
adenine and guanine
A pyrimidine found in all RNA, but not in DNA is _(C)_. - correct
answer -(C) uracil
, In DNA, the pair _(D)_ is held together by 3 hydrogen bonds. -
correct answer -(D) cytosine and guanine
In DNA, the pentose _(E)_ serves as the monosaccharide. -
correct answer -(E) 2-deoxyribose
The monomers of RNA nucleic aids, called nucleotides, consist of
3 parts. What are those 3 parts? - correct answer -A base, ribose,
and phosphoric acid.
Identify the following structure. - correct answer -guanine (purine)
Identify the following structure. - correct answer -adenine (purine)
Identify the following structure. - correct answer -thymine
(pyrimidine)
Identify the following structure. - correct answer -cytosine
(pyrimidine)